Perhaps annual staff meeting for partners in Reading (4,4)
I believe the answer is:
book club
'reading' is the definition.
Both the answer and definition are singular nouns.
I also know that 'reading' relates to this answer.
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for book club that I've seen before include "literary gathering" , "Lit. Soc." , "Society for readers" , "Society giving members cheaper access to reading material" , "Literary group" .)